Finding the Fourth Proportional to 1,054.28, 1,578.72 and 952.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.28 : 1,578.72 = 952.22 : x
2. Step 2: Convert to fraction form
   1,054.28/1,578.72 = 952.22/x
3. Step 3: Cross multiply
   1,054.28x = 1,578.72 × 952.22
4. Step 4: Simplify right side
   1,054.28x = 1,503,288.76
5. Step 5: Solve for x
   x = 1,503,288.76/1,054.28
6. Step 6: Final answer
   x = 1,425.89